Andrew Huberman· PhD
that we can prepare ourselves to grieve more adaptively by regulating the level of catecholamines, in particular epinephrine, that was well-described in the study that I referred to earlier, and tools such as the one found in our "Mastering Stress" episode, and tools of the sort that we talked about today, increasing that vagal tone by actively building up the relationship between exhales and slowing down of the heart rate, so-called respiratory sinus arrhythmia.